There's little gravity to keep the fluid in your stomach, but you still need to vent that carbon dioxide that is expanding inside your belly.
太空中没有多少重力能把这液体留在你的胃里，但你仍需要把在肚子里膨胀的二氧化碳排出体外。
Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation-with seat up.
重力球形止回阀可以变为通风阀，只需用漂浮球体更换标准球体，然后在安装时将阀门倒置，使其阀座向上即可。
A zero-gravity thermodynamic vent system which is desirable to be used in a cryogenic propellant tank is briefly presented.
简要介绍一种可供选择使用的低温燃料贮箱零重力排气系统。
应用推荐